Packaging device for liquid crystal panel

ABSTRACT

The invention provides a packaging device for liquid crystal panel, including: first main body, further including bottom, and a plurality of side walls connected to sides of bottom, wherein side wall forming an opening; second main body, further including bottom and a plurality of side walls connected to sides of bottom, wherein side walls forming an opening; wherein opening of second main body slightly smaller than opening of first main body, and facing towards opening of first main body; second main body able to move adjustably into first main body; bottom and side walls of first and second main bodies forming loading space for loading liquid crystal panel. The packaging device can be expanded when in use for loading large-sized panels, and size of packaging device can be reduced when idled or recycled to enhance efficiency.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to the field of packaging device, and inparticular to a packaging device for loading liquid crystal panel.

2. The Related Arts

The liquid crystal display (LCD) is a flat ultra-thin display device,which comprises a specific amount of color or black-and-white pixelsdisposed in front of a light source or reflective surface. Due to theadvantages of low power consumption, high resolution, reduced thickness,and light weight, the LCD finds wide applications in the field ofmainstream display. The panel of the LCD is mainly made of glass. As thedevelopment for the panel of the LCD is toward further ultra-thin andlight-weighted, the manufacturers of the panels place extra emphasis onthe protection of the panels, and thus the packaging and protection ofthe panel products attracts more attention.

The known packaging device of the liquid crystal display panel is amonolithically formed by injection molding of the material, mainlyexpanded polypropylene (EPP), or polyethylene (PE). As the size of thedisplay panel increases, the manufacturing of such large-sizedmonolithic packaging device will require the larger injection moldingequipments, which increases the difficulty of manufacturing as well asthe cost. In addition, for environmental friendliness, the packagingdevice of display panel is preferred to be recyclable and reusable. Forthe known large-sized monolithic packaging device, the recycling ratiois often low due to the oversize and non-adjustable appearance.

SUMMARY OF THE INVENTION

The technical issue to be addressed by the present invention is toprovide a packaging device for liquid crystal panel, which can beexpanded when in use for loading large-sized panels, and the size of thepackaging device can be reduced when idled or recycled to enhance theefficiency.

To achieve the above object, the present invention adopts the followingtechnical solution.

The present invention provides a packaging device for liquid crystalpanel, which comprises: a first main body, the first main bodycomprising a bottom and a plurality of side walls connected to the sidesof the bottom, wherein one of the side walls forming an opening; asecond main body, the second main body comprising a bottom and aplurality of side walls connected to the sides of the bottom, whereinone of the side walls forming an opening; wherein the opening of thesecond main body being slightly smaller than the opening of the firstmain body and the opening of the second main body facing towards theopening of the first main body; the second main body able to moveadjustably into the first main body; the bottom and the side walls ofthe first main body and the bottom and the side walls of the second mainbody forming a loading space for loading the liquid crystal panel.

According to a preferred embodiment of the present invention, thepackaging device for liquid crystal panel comprises: a first main body,the first main body comprising a bottom, and a first side wall and asecond side wall connected to two opposite sides of the bottom, whereina first end of the first side wall and a first end of the second sidewall being connected by a third side wall; a second end of the firstside wall and a second end of the second side wall forming an opening ofthe first main body; a second main body, the second main body comprisinga bottom, and a fourth side wall and a fifth side wall connected to twoopposite sides of the bottom, wherein a first end of the fourth sidewall and a first end of the fifth side wall being connected by a sixthside wall; a second end of the fourth side wall and a second end of thefifth side wall forming an opening of the second main body; wherein theopening of the second main body being slightly smaller than the openingof the first main body and the opening of the second main body facingtowards the opening of the first main body; the second main body able tomove adjustably into the first main body; the bottom, the first sidewall, the second side wall and the third side wall of the first mainbody and the bottom, the fourth side wall, the fifth side wall and thesixth side wall of the second main body forming a loading space forloading the liquid crystal panel.

In the above embodiment of the present invention, the bottom of thefirst main body is disposed with a track trench respectively at the twosides of the bottom close to the first side wall and the second sidewall; the lower part of the bottom of the second main body is disposedwith a guiding track respectively at a location corresponding to thefourth side wall and the fifth side wall; the guiding track matches thetrack trench for the second main body to move adjustably into the firstmain body.

In the above embodiment of the present invention, the bottom of thefirst main body is disposed with a buffer part respectively at alocation close to the first end of the first side wall and the first endof the second side wall; the buffer part is connected to the first sidewall and the second side wall in a protruding manner; the bottom of thesecond main body is disposed with a buffer part respectively at alocation close to the first end of the fourth side wall and the firstend of the fifth side wall; the buffer part is connected to the fourthside wall and the fifth side wall in a protruding manner.

In the above embodiment of the present invention, the second end of thefirst side wall and the second end of the second side wall are disposedrespectively with a stuck trench; the second end of the fourth side walland the second end of the fifth side wall are disposed respectively witha stuck point; the stuck trench and the stuck point match each other toprevent the second main body from disengaging from the first main bodywhen moving adjustably inside the first main body.

In the above embodiment of the present invention, the first side walland the second side wall are further disposed respectively with alocking stuck trench; the locking stuck trench and the stuck point matcheach other to lock in the position of the second main body inside thefirst main body; wherein the two sides of the locking stuck trench arebeveled chamfers.

In the above embodiment of the present invention, the bottom surface ofthe bottom of the second main body is disposed with at least anenhancement part; the enhancement part is connected to the bottomsurface of the bottom of the second main body by screw or snapconnection.

In the above embodiment of the present invention, the upper surface ofthe bottom of the first main body comprises a first plane and a secondplane; the first plane is at a higher level than the second plane; thefirst plane and the second plane are connected by an inclined plane; thebottom of the second main body comprises a third plane as the bottomsurface; the guiding track is disposed with a guiding track convex partat the end away from the opening; the guiding track convex is along thethird plane and downwards; when the second main body enters the firstmain body, the third plane closely fits the first plane and the guidingtrack convex closely fits the second plane so that the loading surfaceof the loading space is at a horizontal level; when the second main bodyexpands beyond the first main body, the third plane closely fits thesecond plane, and the guiding track convex part closely fits the surfaceplacing the packaging device so that the loading surface of the loadingspace is at a horizontal level.

In the above embodiment of the present invention, the first side walland the second side wall are disposed respectively with a concave trenchalong the length direction; the fourth side wall and the fifth side wallare disposed respectively with a convex part; the convex part matchesthe concave trench.

According to another preferred embodiment of the present invention, thepackaging device for liquid crystal panel comprises: a first main body,the first main body comprising a bottom, and a first side wall and asecond side wall connected to two opposite sides of the bottom, whereinthe two ends of the first side wall and the two ends of the second sidewall respectively forming a first opening and a second opening of thefirst main body; two second main bodies, each of the two second mainbodies comprising a bottom, and a fourth side wall and a fifth side wallconnected to two opposite sides of the bottom, wherein a first end ofthe fourth side wall and a first end of the fifth side wall beingconnected by a sixth side wall; a second end of the fourth side wall anda second end of the fifth side wall forming an opening of the secondmain body; wherein the openings of the second main bodies being slightlysmaller than the opening of the first main body and the openings of thesecond main bodies facing respectively towards the first opening and thesecond opening of the first main body; the two second main bodies ableto move adjustably into the first main body; the bottom, the first sidewall, and the second side wall of the first main body and the bottom,the fourth side wall, the fifth side wall and the sixth side wall of thetwo second main bodies forming a loading space for loading the liquidcrystal panel.

The packaging device for the liquid crystal panel according to thepresent invention uses an assembly of two main bodies, and one of thetwo main bodies is able to move adjustably. During the manufacturing ofthe device, no large-sized injection molding equipment is required so asto reduce the manufacturing difficulty and the cost. Also, the packagingdevice can be expanded when in use for loading large-sized panels, andthe size of the packaging device can be reduced when idled or recycledto enhance the efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

To make the technical solution of the embodiments according to thepresent invention, a brief description of the drawings that arenecessary for the illustration of the embodiments will be given asfollows. Apparently, the drawings described below show only exampleembodiments of the present invention and for those having ordinaryskills in the art, other drawings may be easily obtained from thesedrawings without paying any creative effort. In the drawings:

FIG. 1 is a schematic view showing a first embodiment of the packagingdevice when expanded according to the present invention;

FIG. 2 is a schematic view showing the packaging device of FIG. 1 whenreduced;

FIG. 3 is a top view of the packaging device of FIG. 1;

FIG. 4 is an enlarged partial view showing the structure A of thepackaging device of FIG. 3;

FIG. 5 is an enlarged partial view showing the structure C of thepackaging device of FIG. 3;

FIG. 6 is a schematic cross-sectional view along Y-Y direction of thepackaging device of FIG. 3;

FIG. 7 is a main cross-sectional view along Y-Y direction of thepackaging device of FIG. 3;

FIG. 8 is an enlarged partial view showing the structure B of thepackaging device of FIG. 7;

FIG. 9 is a cross-sectional view along X1-X1 direction of the packagingdevice of FIG. 3;

FIG. 10 is a schematic cross-sectional view along X2-X2 direction of thepackaging device of FIG. 3;

FIG. 11 is a main cross-sectional view along X2-X2 direction of thepackaging device of FIG. 3;

FIG. 12 is a schematic view showing a second embodiment of the packagingdevice when expanded according to the present invention;

FIG. 13 is a top view of the packaging device of FIG. 12;

FIG. 14 is a schematic view showing the packaging device of FIG. 12 whenreduced; and

FIG. 15 is a top view showing a third embodiment of the packaging devicewhen expanded according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

As aforementioned, the present invention is to address the disadvantagesof known techniques. The present invention provides a packaging devicefor liquid crystal panel. The packaging device comprises: a first mainbody, the first main body comprising a bottom and a plurality of sidewalls connected to the sides of the bottom, wherein one of the sidewalls forming an opening; a second main body, the second main bodycomprising a bottom and a plurality of side walls connected to the sidesof the bottom, wherein one of the side walls forming an opening; whereinthe opening of the second main body being slightly smaller than theopening of the first main body and the opening of the second main bodyfacing towards the opening of the first main body; the second main bodyable to move adjustably into the first main body; the bottom and theside walls of the first main body and the bottom and the side walls ofthe second main body forming a loading space for loading the liquidcrystal panel.

The packaging device for liquid crystal panel of the present inventioncan be expanded when in use for loading large-sized panels, and the sizeof the packaging device can be reduced when idled or recycled to enhancethe efficiency.

The following detailed description refers to drawings and embodiments ofthe present invention.

First Embodiment

Referring to FIGS. 1-11, FIG. 1 is a schematic view showing a firstembodiment of the packaging device when expanded according to thepresent invention; FIG. 2 is a schematic view showing the packagingdevice of FIG. 1 when reduced; and FIG. 3 is a top view of the packagingdevice of FIG. 1.

As shown in FIG. 1, the packaging device of the instant embodimentcomprises: a first main body 10, the first main body 10 comprising abottom 101, and a first side wall 102 and a second side wall 103connected to two opposite sides of the bottom 101, wherein a first end102 a of the first side wall 102 and a first end 103 a of the secondside wall 103 being connected by a third side wall 104; a second end 102b of the first side wall 102 and a second end 103 b of the second sidewall 103 forming an opening of the first main body 10; a second mainbody 20, the second main body 20 comprising a bottom 201, and a fourthside wall 202 and a fifth side wall 205 connected to two opposite sidesof the bottom 201, wherein a first end 202 a of the fourth side wall 202and a first end 203 a of the fifth side wall 203 being connected by asixth side wall 204; a second end 202 b of the fourth side wall 202 anda second end 203 b of the fifth side wall 203 forming an opening of thesecond main body 20.

In the instant embodiment, the opening of the second main body 20 isslightly smaller than the opening of the first main body 10, and theopening of the second main body 20 faces towards the opening of thefirst main body 10. The second main body 20 is able to move adjustablyinto the first main body 10. The bottom 101, the first side wall 102,the second side wall 103 and the third side wall 104 of the first mainbody 10 and the bottom 201, the fourth side wall 202, the fifth sidewall 203 and the sixth side wall 204 of the second main body 20 form aloading space for loading the liquid crystal panel.

In the instant embodiment, the first main body 10 and the second mainbody 20 can be manufactured by injection molding process. The materialcan select from antistatic Polycarbonate (PC), Polyethylene (PE),Expandable Polyethylene (EPE), Expanded Polypropylene (EPP), HighDensity Polyethylene (HDPE), and so on.

In the instant embodiment, the bottom 101 of the first main body 10 isdisposed with a track trench 105 respectively at the two sides of thebottom 101 close to the first side wall 102 and the second side wall103. The lower part of the bottom 201 of the second main body 20 isdisposed with a guiding track 205 respectively at a locationcorresponding to the fourth side wall 202 and the fifth side wall. 203.The guiding track 205 matches the track trench 105 for the second mainbody 20 to move adjustably into the first main body 10.

In the instant embodiment, the bottom 101 of the first main body 10 isdisposed with a buffer part 106 respectively at a location close to thefirst end 102 a of the first side wall 102 and the first end 103 a ofthe second side wall 103. The buffer part 106 is connected to the firstside wall 102 and the second side wall 103 in a protruding manner. Thebottom 201 of the second main body 20 is disposed with a buffer part 206respectively at a location close to the first end 202 a of the fourthside wall 202 and the first end 203 a of the fifth side wall 203. Thebuffer part 206 is connected to the fourth side wall 202 and the fifthside wall 203 in a protruding manner. Referring to FIG. 5, the bufferparts 106, 206 comprise a protruding part 106 b, 206 b connected to theside walls 102, 103, 202, 203 in the protruding manner, and a matchingconcave part 106 a, 206 a. The concave part 106 a, 206 a and theprotruding part 106 b, 206 b are engaged to form the buffer part 106,206.

In the instant embodiment, the second end 102 b of the first side wall102 and the second end 103 b of the second side wall 103 are disposedrespectively with a stuck trench 107. The second end 202 b of the fourthside wall 202 and the second end 203 b of the fifth side wall 203 aredisposed respectively with a stuck point 207. The stuck trench 107 andthe stuck point 207 match each other to prevent the second main body 20from disengaging from the first main body 10 when moving adjustablyinside the first main body 10. As shown in FIG. 4, a side of the stucktrench 107 away from the second end 102 b is disposed as a beveledchamfer, and the stuck point 207 is disposed as a beveled chamfer. Whenthe packaging device is expanded, the second main body 20 does notdisengage from the first main body 10, and the relative positions of thesecond main body 20 and the first main body 10 are also fixed. When thepackaging device is reduced, a force is applied to push the second mainbody 20 to make the stuck point 207 cross over the stuck trench 107 soas to accommodate the second main body 20 inside the first main body 10.

In the instant embodiment, the bottom surface of the bottom 201 of thesecond main body 20 is disposed with at least an enhancement part 208.The enhancement part 208 is connected to the bottom surface of thebottom 201 of the second main body 20 by screw or snap connection. Asshown in FIG. 6, the material for the enhancement part 208 is preferablywith higher rigidity, such as, SECC, SGCC, aluminum alloy, and so on.

Referring to FIGS. 7 and 8, in the instant embodiment, the first sidewall 102 and the second side wall 103 are disposed respectively with aconcave trench 109 along the length direction. The fourth side wall 202and the fifth side wall 203 are disposed respectively with a convex part209; the convex part 209 matches the concave trench 109 to prevent thesecond main body 20 from disengaging from the first main body 10 alongthe upward direction perpendicular to the bottom. Also, a gap isreserved between the convex part 209 and the concave trench 109 for theconvenience of expansion and reduction of the packaging device.

Referring to FIGS. 9-11, the upper surface of the bottom 101 of thefirst main body 10 comprises a first plane 101 a and a second plane 101b. The first plane 101 a is at a higher level than the second plane 101b, and the first plane 101 a and the second plane 102 a are connected byan inclined plane. The bottom 201 of the second main body 20 comprises athird plane 201 a as the bottom surface. The guiding track 205 isdisposed with a guiding track convex part 205 a at the end away from theopening. The guiding track convex 205 a is along the third plane 201 aand downwards. When the second main body 20 enters the first main body10, the third plane 201 a closely fits the first plane 101 a and theguiding track convex closely 205 a fits the second plane 101 b so thatthe loading surface of the loading space is at a horizontal level. Whenthe second main body 20 expands beyond the first main body 10, the thirdplane 201 a closely fits the second plane 101 b, and the guiding trackconvex part 205 a closely fits the surface placing the packaging deviceso that the loading surface of the loading space is at a horizontallevel.

Second Embodiment

Referring to FIGS. 12-14, FIG. 12 is a schematic view showing a secondembodiment of the packaging device when expanded according to thepresent invention; FIG. 13 is a top view of the packaging device of FIG.12; and FIG. 14 is a schematic view showing the packaging device of FIG.12 when reduced.

The second embodiment differs from the first embodiment in that, in thesecond embodiment, the first side wall 102 and the second side wall 103are further disposed respectively with a locking stuck trench 108. Thelocking stuck trench 108 and the stuck point 207 match each other tolock in the position of the second main body 20 inside the first mainbody 10, wherein the two sides of the locking stuck trench 108 arebeveled chamfers.

In the instant embodiment, a plurality of locking stuck trenches isdisposed at the side wall so that the second main body 20 can be fixedto different positions inside the first main body 10. In other words,the packaging device can provide different sizes to accommodate theliquid crystal panels of different sizes.

Third Embodiment

FIG. 15 is a top view showing a third embodiment of the packaging devicewhen expanded according to the present invention.

As shown in FIG. 15, the packaging device for liquid crystal panel ofthe instant embodiment comprises: a first main body 10, the first mainbody 10 comprising a bottom 101, and a first side wall 102 and a secondside wall 103 connected to two opposite sides of the bottom 101, whereinthe two ends of the first side wall 102 and the two ends of the secondside wall 103 respectively forming a first opening and a second openingof the first main body 10; two second main bodies 20, each of the twosecond main bodies 20 comprising a bottom 201, and a fourth side wall202 and a fifth side wall 203 connected to two opposite sides of thebottom 201, wherein a first end 202 a of the fourth side wall 202 and afirst end 203 a of the fifth side wall 203 being connected by a sixthside wall 204; a second end 202 b of the fourth side wall 202 and asecond end 203 b of the fifth side wall 203 forming an opening of thesecond main body 20; wherein the openings of the second main bodies 20being slightly smaller than the opening of the first main body 10 andthe openings of the second main bodies 20 facing respectively towardsthe first opening and the second opening of the first main body 10; thetwo second main bodies 20 able to move adjustably into the first mainbody 10; the bottom 101, the first side wall 102, and the second sidewall 103 of the first main body 10 and the bottom 201, the fourth sidewall 202, the fifth side wall 203 and the sixth side wall 204 of the twosecond main bodies 20 forming a loading space for loading the liquidcrystal panel.

The instant embodiment differs from the first embodiment in that thefirst main body of the packaging device of this embodiment is disposedwith two opposite openings and the two second main bodies 20 can moveadjustably through the two openings into the first main body 10.

In summary, the packaging device for the liquid crystal panel accordingto the present invention uses an assembly of two main bodies, and one ofthe two main bodies is able to move adjustably. During the manufacturingof the device, no large-sized injection molding equipment is required soas to reduce the manufacturing difficulty and the cost. Also, thepackaging device can be expanded when in use for loading large-sizedpanels, and the size of the packaging device can be reduced when idledor recycled to enhance the efficiency.

It should be noted that in the present disclosure the terms, such as,first, second are only for distinguishing an entity or operation fromanother entity or operation, and does not imply any specific relation ororder between the entities or operations. Also, the terms “comprises”,“include”, and other similar variations, do not exclude the inclusion ofother non-listed elements. Without further restrictions, the expression“comprises a . . . ” does not exclude other identical elements frompresence besides the listed elements.

Embodiments of the present invention have been described, but notintending to impose any unduly constraint to the appended claims. Anymodification of equivalent structure or equivalent process madeaccording to the disclosure and drawings of the present invention, orany application thereof, directly or indirectly, to other related fieldsof technique, is considered encompassed in the scope of protectiondefined by the clams of the present invention.

What is claimed is:
 1. A packaging device for liquid crystal panel,which comprises: a first main body, the first main body comprising abottom and a plurality of side walls connected to the sides of thebottom, wherein one of the side walls forming an opening; a second mainbody, the second main body comprising a bottom and a plurality of sidewalls connected to the sides of the bottom, wherein one of the sidewalls forming an opening; wherein the opening of the second main bodybeing slightly smaller than the opening of the first main body and theopening of the second main body facing towards the opening of the firstmain body; the second main body able to move adjustably into the firstmain body; the bottom and the side walls of the first main body and thebottom and the side walls of the second main body forming a loadingspace for loading the liquid crystal panel.
 2. The packaging device forliquid crystal panel as claimed in claim 1, wherein: the first main bodycomprises a bottom, and a first side wall and a second side wallconnected to two opposite sides of the bottom, wherein a first end ofthe first side wall and a first end of the second side wall beingconnected by a third side wall; a second end of the first side wall anda second end of the second side wall forming an opening of the firstmain body; the second main body comprises a bottom, and a fourth sidewall and a fifth side wall connected to two opposite sides of thebottom, wherein a first end of the fourth side wall and a first end ofthe fifth side wall being connected by a sixth side wall; a second endof the fourth side wall and a second end of the fifth side wall formingan opening of the second main body; wherein the opening of the secondmain body being slightly smaller than the opening of the first main bodyand the opening of the second main body facing towards the opening ofthe first main body; the second main body able to move adjustably intothe first main body; the bottom, the first side wall, the second sidewall and the third side wall of the first main body and the bottom, thefourth side wall, the fifth side wall and the sixth side wall of thesecond main body forming a loading space for loading the liquid crystalpanel.
 3. The packaging device for liquid crystal panel as claimed inclaim 2, wherein the bottom of the first main body is disposed with atrack trench respectively at the two sides of the bottom close to thefirst side wall and the second side wall; the lower part of the bottomof the second main body is disposed with a guiding track respectively ata location corresponding to the fourth side wall and the fifth sidewall; the guiding track matches the track trench for the second mainbody to move adjustably into the first main body.
 4. The packagingdevice for liquid crystal panel as claimed in claim 2, wherein thebottom of the first main body is disposed with a buffer partrespectively at a location close to the first end of the first side walland the first end of the second side wall; the buffer part is connectedto the first side wall and the second side wall in a protruding manner;the bottom of the second main body is disposed with a buffer partrespectively at a location close to the first end of the fourth sidewall and the first end of the fifth side wall; the buffer part isconnected to the fourth side wall and the fifth side wall in aprotruding manner.
 5. The packaging device for liquid crystal panel asclaimed in claim 3, wherein the bottom of the first main body isdisposed with a buffer part respectively at a location close to thefirst end of the first side wall and the first end of the second sidewall; the buffer part is connected to the first side wall and the secondside wall in a protruding manner; the bottom of the second main body isdisposed with a buffer part respectively at a location close to thefirst end of the fourth side wall and the first end of the fifth sidewall; the buffer part is connected to the fourth side wall and the fifthside wall in a protruding manner.
 6. The packaging device for liquidcrystal panel as claimed in claim 3, wherein the second end of the firstside wall and the second end of the second side wall are disposedrespectively with a stuck trench; the second end of the fourth side walland the second end of the fifth side wall are disposed respectively witha stuck point; the stuck trench and the stuck point match each other toprevent the second main body from disengaging from the first main bodywhen moving adjustably inside the first main body.
 7. The packagingdevice for liquid crystal panel as claimed in claim 6, wherein the firstside wall and the second side wall are further disposed respectivelywith a locking stuck trench; the locking stuck trench and the stuckpoint match each other to lock in the position of the second main bodyinside the first main body; wherein the two sides of the locking stucktrench are beveled chamfers.
 8. The packaging device for liquid crystalpanel as claimed in claim 2, wherein the bottom surface of the bottom ofthe second main body is disposed with at least an enhancement part; theenhancement part is connected to the bottom surface of the bottom of thesecond main body by screw or snap connection.
 9. The packaging devicefor liquid crystal panel as claimed in claim 3, wherein the uppersurface of the bottom of the first main body comprises a first plane anda second plane; the first plane is at a higher level than the secondplane; the first plane and the second plane are connected by an inclinedplane; the bottom of the second main body comprises a third plane as thebottom surface; the guiding track is disposed with a guiding trackconvex part at the end away from the opening; the guiding track convexis along the third plane and downwards; when the second main body entersthe first main body, the third plane closely fits the first plane andthe guiding track convex closely fits the second plane so that theloading surface of the loading space is at a horizontal level; when thesecond main body expands beyond the first main body, the third planeclosely fits the second plane, and the guiding track convex part closelyfits the surface placing the packaging device so that the loadingsurface of the loading space is at a horizontal level.
 10. The packagingdevice for liquid crystal panel as claimed in claim 3, wherein the firstside wall and the second side wall are disposed respectively with aconcave trench along the length direction; the fourth side wall and thefifth side wall are disposed respectively with a convex part; the convexpart matches the concave trench.
 11. A packaging device for liquidcrystal panel comprises: a first main body, the first main bodycomprising a bottom, and a first side wall and a second side wallconnected to two opposite sides of the bottom, wherein the two ends ofthe first side wall and the two ends of the second side wallrespectively forming a first opening and a second opening of the firstmain body; two second main bodies, each of the two second main bodiescomprising a bottom, and a fourth side wall and a fifth side wallconnected to two opposite sides of the bottom, wherein a first end ofthe fourth side wall and a first end of the fifth side wall beingconnected by a sixth side wall; a second end of the fourth side wall anda second end of the fifth side wall forming an opening of the secondmain body; wherein the openings of the second main bodies being slightlysmaller than the opening of the first main body and the openings of thesecond main bodies facing respectively towards the first opening and thesecond opening of the first main body; the two second main bodies ableto move adjustably into the first main body; the bottom, the first sidewall, and the second side wall of the first main body and the bottom,the fourth side wall, the fifth side wall and the sixth side wall of thetwo second main bodies forming a loading space for loading the liquidcrystal panel.
 12. The packaging device for liquid crystal panel asclaimed in claim 11, wherein the bottom of the first main body isdisposed with a track trench respectively at the two sides of the bottomclose to the first side wall and the second side wall; the lower part ofthe bottom of the second main body is disposed with a guiding trackrespectively at a location corresponding to the fourth side wall and thefifth side wall; the guiding track matches the track trench for thesecond main body to move adjustably into the first main body.
 13. Thepackaging device for liquid crystal panel as claimed in claim 11,wherein the bottom of the first main body is disposed with a buffer partrespectively at a location close to the first end of the first side walland the first end of the second side wall; the buffer part is connectedto the first side wall and the second side wall in a protruding manner;the bottom of the second main body is disposed with a buffer partrespectively at a location close to the first end of the fourth sidewall and the first end of the fifth side wall; the buffer part isconnected to the fourth side wall and the fifth side wall in aprotruding manner.
 14. The packaging device for liquid crystal panel asclaimed in claim 12, wherein the bottom of the first main body isdisposed with a buffer part respectively at a location close to thefirst end of the first side wall and the first end of the second sidewall; the buffer part is connected to the first side wall and the secondside wall in a protruding manner; the bottom of the second main body isdisposed with a buffer part respectively at a location close to thefirst end of the fourth side wall and the first end of the fifth sidewall; the buffer part is connected to the fourth side wall and the fifthside wall in a protruding manner.
 15. The packaging device for liquidcrystal panel as claimed in claim 12, wherein the second end of thefirst side wall and the second end of the second side wall are disposedrespectively with a stuck trench; the second end of the fourth side walland the second end of the fifth side wall are disposed respectively witha stuck point; the stuck trench and the stuck point match each other toprevent the second main body from disengaging from the first main bodywhen moving adjustably inside the first main body.
 16. The packagingdevice for liquid crystal panel as claimed in claim 12, wherein thefirst side wall and the second side wall are further disposedrespectively with a locking stuck trench; the locking stuck trench andthe stuck point match each other to lock in the position of the secondmain body inside the first main body; wherein the two sides of thelocking stuck trench are beveled chamfers.
 17. The packaging device forliquid crystal panel as claimed in claim 12, wherein the bottom surfaceof the bottom of the second main body is disposed with at least anenhancement part; the enhancement part is connected to the bottomsurface of the bottom of the second main body by screw or snapconnection.
 18. The packaging device for liquid crystal panel as claimedin claim 12, wherein the upper surface of the bottom of the first mainbody comprises a first plane and a second plane; the first plane is at ahigher level than the second plane; the first plane and the second planeare connected by an inclined plane; the bottom of the second main bodycomprises a third plane as the bottom surface; the guiding track isdisposed with a guiding track convex part at the end away from theopening; the guiding track convex is along the third plane anddownwards; when the second main body enters the first main body, thethird plane closely fits the first plane and the guiding track convexclosely fits the second plane so that the loading surface of the loadingspace is at a horizontal level; when the second main body expands beyondthe first main body, the third plane closely fits the second plane, andthe guiding track convex part closely fits the surface placing thepackaging device so that the loading surface of the loading space is ata horizontal level.
 19. The packaging device for liquid crystal panel asclaimed in claim 12, wherein the first side wall and the second sidewall are disposed respectively with a concave trench along the lengthdirection; the fourth side wall and the fifth side wall are disposedrespectively with a convex part; the convex part matches the concavetrench.